Horological movement comprising a generator

Abstract

An electromechanical horological movement including an analogue time display device and provided with at least one electromechanical motor, to drive at least one indicator of the analogue time display, and a generator including a rotor and associated with an oscillating mass coaxial with the time display device, this horological movement including a first wheel provided with a shaft, coaxial with said indicator, which is guided in rotation, in a main embodiment, by a fixed cylindrical tube around which is rotatably mounted at least one cannon of the time display device. The first wheel is in meshing relation with the rotor of the generator and is fixedly connected to the oscillating mass, on the side opposite the analogue time display, so that this oscillating mass can rotate the rotor of the generator via the first wheel.

The invention claimed is: 
     
       1. A horological movement comprising:
 an analogue time display device; 
 an electromechanical motor configured to drive an indicator of the analogue display; 
 a generator comprising a rotor and associated with an oscillating mass which is coaxial with the analogue time display device; and 
 a first wheel provided with a shaft, coaxial with said indicator, which is guided in rotation by a cannon carrying said indicator and integral with a second wheel in meshing relation with the electromechanical motor or by a fixed cylindrical tube around which is rotatably mounted said cannon, 
 wherein the first wheel is in meshing relation with the rotor of the generator, and 
 wherein on a side opposite the analogue time display, the first wheel is fixedly connected to the oscillating mass so that said oscillating mass can rotate the rotor of the generator via the first wheel. 
 
     
     
       2. The horological movement according to  claim 1 , wherein the oscillating mass is fastened to a central part, which is movable in rotation, of a ball bearing device. 
     
     
       3. The horological movement according to  claim 1 , wherein the first wheel is fastened to the oscillating mass without arranging a bearing specific to said first wheel on the side of said oscillating mass, so that the first wheel is not associated with any specific pivot bearing. 
     
     
       4. The horological movement according to  claim 1 , wherein the electromechanical motor, the generator, a first geartrain comprising the first wheel and kinematically coupling the oscillating mass to the rotor of the generator, and a second geartrain comprising the second wheel and kinematically coupling the electromechanical motor to said indicator together form an electromechanical module which is separate from the other parts of the horological movement and arranged in said horological movement in a removable manner. 
     
     
       5. The horological movement according to  claim 1 , wherein a transmission ratio between the first wheel and the rotor of the generator is equal to thirty. 
     
     
       6. An electromechanical motor module comprising:
 a first motor formed of a permanent magnet rotor and a stator provided with a coil and associated with a first wheel provided with an axis; 
 a second motor associated with a second wheel provided with a cannon intended to carry a minute indicator of an analogue time display, said axis being guided in rotation by a fixed cylindrical tube, around which said cannon is mounted, or directly by said cannon and intended to carry in said motor module a seconds indicator or seconds counter, to form an electromechanical module comprising an electromechanical motor, formed of said second motor, for driving an hour indicator and said minute indicator; and 
 a generator formed by said permanent magnet rotor and said stator provided with said coil, the first wheel being fixedly connected to an oscillating mass which is arranged under said electromechanical module, coaxially to said first wheel, in order to be able to rotate the rotor of the generator. 
 
     
     
       7. The electromechanical motor module according to  claim 6 , wherein the oscillating mass is fastened to a central part, which is movable in rotation, of a ball bearing device which is arranged under the electromechanical module. 
     
     
       8. The electromechanical motor module according to  claim 7 , wherein the axis of the first wheel is a shaft fastened to the oscillating mass, said first wheel being fastened to the oscillating mass associated with said electromechanical module without arranging a bearing specific to said first wheel on a side of said oscillating mass, so that the first wheel is not associated with any specific bearing. 
     
     
       9. The electromechanical motor module according to  claim 6 , wherein said stator includes a first stator including positioning notches and a second stator without positioning notches.